Delhi to test catalytic devices on heavy vehicles to cut emissions

In a landmark move to combat vehicular pollution, the Delhi government is evaluating viability of a pilot project to deploy advanced catalytic converter-based retrofitting devices in heavy commercial vehicles.

The initiative, led by the Delhi Pollution Control Committee (DPCC), is the first-of-its-kind in the country and reflects the government’s strong commitment to harnessing technology for sustainable environmental solutions.

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Delhi’s Environment Minister Manjinder Singh Sirsa has informed that the catalytic converter retrofitting devices will be installed at the exhausts of heavy vehicles, a solution that he said has demonstrated the capability to reduce particulate matter and other harmful emissions by more than 70 per cent in BS-III and BS-IV vehicles.

“Delhi is taking a decisive leap towards tech-driven pollution control. This is not only a first-of-its-kind effort in India but also a solution that can be replicated in other cities and sectors where fossil fuel engines are a major source of pollution. I am encouraged by the fact that more and more companies and innovators are approaching us with product demonstrations,” Sirsa added.

He added, “This shows that our city is now seen as a leader in supporting and implementing innovative environmental solutions.”
The decision follows the context of CAQM’s directions on restricting older, higher-polluting vehicles from entering Delhi.

The Delhi government, while fulfilling all legal commitments to follow law and implementing these measures, is equally focused on providing innovative, science-backed alternatives that protect livelihoods while reducing pollution.

Sirsa has shared that once the pilot project is successful, plans will be made so that such devices can be installed in all sorts of vehicles, so that emissions can be reduced

Minister informed that these retrofitting devices have demonstrated the capability to reduce particulate matter and other harmful emissions — PM, CO, HC, and NOx — by more than 70 per cent in BS-III and BS-IV vehicles, and they have been rigorously tested for durability, low back pressure, regeneration capability, and over 9,000 km of field use.

“This pilot is a trial and a statement of our vision — to deploy permanent, innovative solutions that clean Delhi’s air while keeping essential transport running,” Sirsa added.

According to the minister, DPCC will serve as the single point of contact for the project, coordinating with departments such as PWD, MCD, DJB, and Health, and providing a list of government and autonomous body vehicles meeting BS-IV or earlier norms.

Testing will be undertaken in collaboration with IIT Delhi or ICAT.

“Our goal is not just to comply with environmental directives, but to lead the way in building a cleaner, healthier, and more sustainable Delhi,” the minister said.

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